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所属单位：航天学院

发表刊物：CHINESE JOURNAL OF AERONAUTICS

关键字：Agile spacecraft Control moment gyro Singularity analysis Space expansion method Steering strategy

摘要：Control Moment Gyroscope (CMG) is an effective candidate for agile satellites and large spacecraft attitude control because of its powerful torque amplification capability. The most serious situation, however, in using CMG is the inherent geometric singularity problem, where there's no torque output along a particular direction. Space expansion method has been proposed in this work for the singularity analysis. Based on inverse mapping transformation, an expanded Jacobian matrix which is a full rank square matrix is obtained. The singular angle sets of the 3-parallel cluster and pyramid cluster are distinguished using space expansion method. An effective hybrid steering strategy, able to deal with the elliptic singularity, is further proposed. Simulation results demonstrate the excellent performance of the proposed steering logic compared to the generalized singular robust logic and pseudo inverse logic in terms of energy consumption and torque error. (C) 2018 Chinese Society of Aeronautics and Astronautics. Production and hosting by Elsevier Ltd. This is an open access article under the CC-BY-NC-ND license.

ISSN号：1000-9361

是否译文：否

发表时间：2018-04-01

合写作者：韩锋,华冰,陈志明,郭宇锋

通讯作者：吴云华